of detroit



' shown es a coupling device and ber12isa UNITED STATES PATENT oEEIoE'. 'l

'MILTON TI'BBETTS, OF DETROIT, MICHIGAN, ASSIGNOB TO PAOKABD IOTOR GAB.

COMPANY, 0F DETROIT,

MICHIGAN, A CORPORATION 0F MICHIGAN.

GOUPLING DEVICE.

.pplicaticn tiled September To all whom it may concern Be it known that I, MILTON Trnn'rrs, a citizen of the United States, and resident of Detroit, Wayne county, State of Michi gan, have invented certain new and useful Im rovements in Coupling Devices, oi' which the followin is a specification.

This invention re etes to improvements in spring connections and particularly to means for transmitting power through a spring device.

One of the objects of the invention is to provide a multiple plate spring with a 99nnection at one end for clamping the plates togetheras the spring is flexed.

Another object of the invention is to provide means by which power is transmitted through spring mechanism whereby a certain variation in alinement of the elements is allowed and a variable and yieldable driving connection is supplied without noise or shock.

Another object of the invention is to pmvide means for increasing the resistance of the spring mechanism as the strength of the power to be transmitted is increased.

Other objects of the invention will appear frn'the following description taken in connectin with the drawing which forms a part hereof, and in which z,-

Figure 1 is an elevation view of a power transmitting device embodying the invention;

Fig. 2 is a view from the right of Fig. 1;

Fig. 3 is a transverse sectional view taken on the line 3-3 of Fig. 1; y

Fig. 4 is a. view similar to Fig. 3 showing;5 the relative position of the members in operation; and

'g. a transverse sectional view on the line 5--5 of Fig. 2.

Referring to the drawing, the device 1.0 is it comprises On the memheed or element 13 lprovided with 14, One end of coupling members 11 and 12. diametrically opposed slots the member 11 is 15 and secured within the ork are spring lates 16 the ends of which enter the slots 4: when the coupling members are in engegement. Means such as a bolt 15 may be used to secure the plates to the forked' ends of the member 11.

In the element 13, at either side 'ofreach of the slots 14 are ro d holes 11 .hevjng their specification of Letters Patent.

forked shA ed as shown et Patented Mar. 9, 1920.

14, i916. serial Nc. 120,088.

sides opening into the slots as shown. In these holes are inserted wear pieces contact with the sides of the spring plates. By reason lf such wear pieces, the spring plates are held firmly in position within the slots and shock and noise are obviated. As show cylin rical so as to turn one side only being Yfor surface contactwith the plates, and 1f desired the edges of the holes at their ends may be peened over as at 19 to retain they wear pieces in place. Y

Consider the driving action as transmitted from the member 12 to the member 11 through the head 13 and plates 16. {As shown in Fig. 4 the member 12 is moved in the direction of the arrow 2O and the s yring plates 16 are bent from the position esignated by the line af-a to that designated by the line b-b before the inertia of the member 11 is overcome. Since the wear pieces 18 turn freely inthe holes 17 the swin ing movement ofthe 4plates is transmitte in part to the wear pieces. and theytake'the position shown in Fig. 4. The action of the wear pieces 18 would be the same if the d riving operation were in the other direction.

As the plates 16 clamped more tightlv the slot thus increasin the frictional resistance between the con acting plates. 'This increase inthe clamping action results from the change :in the position of the spring plates in the slots 14. When the spring plates are not under tension, as in Fig. T3, they extend parallel to the walls ofithe ots, while in are flexed the are between thesi es of Fig. 4, the plates exten hrougli the slots at an angle, causing thasides o! tbe slot `to grip them closer described my invention, what to secure by Letters Pattheir flexed position as shown in is adapted e;

the wear pieces are substantially V shown attened slightly f inps the plates more tightly :is the power applied to said plates inerenses, sind pieees being relatively movnhle with rerlpeel to ent-h other.

2. A power trnlmnittingg` thine eonrprisV ing' in eombirntt'ion n ptnrnll.) ot' sprint;` plates and means t-:irrietl livr sutil derive nml acting on said plates :is ihr poner applied to the spring lil-.ttes inert-useto inerense the fric-tional reistnnee between the mljan'ent. plates, st1id menne heilig relatively mo\ nhltwith respect to euch other.

3. A con ling device ,comprising t\vo een pling inem 1ers, epi-ing phites seein-ed to one of said members. n eonpling; element, on thtI other of seid memherh. snifl eli-ment. beine.

rovidetl with tlininelrirttlh I-ppoerd slots 1n which seid spring plates sent. und freely rotatable Went' pievi-sin snhl blots zit either side of said plates. huid neer 4pit-eer. hut-ing Snrfnees adapted to rlump the spring plut more tightly :ist he .said rplzttes :fire tiered.

4. A coupling;- deviee comprising two onplinr members. spring plates severed to one of said members and n eonpling element on the other of snidinemliers. seid element heing provided with dianietzicnlly opposed slot-S in which Said springv plates sent, and freely rotatable substantially eylindrictti Wear pieces mounted in said element and projecting into said slots et either side ol" said plates Seid weer pieces hinting surfer-ee adapted to clamp the springviiilntes more tightly ns the seid platee are flexed.

5. coupling nienilher provided with dirtnietrically opposed slots, and round hole, one at either side of and opening' into seid slots and wear pieces loosely mounted in seid holes und projertiner into nid sl it,e.snid n mit pieces having snrt'it'es adapted to he mort-ft toward each other :te seid oonpling memlier Vis rotated.

plates together its the spring is flexed, said rhnnpingi menne being' relatively movable with respeet to eneh other.

T. vln eomhinntion with relatively movable perte ol' n multiple plnte spring secured to one of seid perte :und extending adjacent the other ot* mill ptn-ts und nie-.ins carried by said hist inlined pnt-L for clamping the plntes t0- Pether its the parte nre moved relatively to emxh other.` sind ineens being relatively mornhle with respect. to euch other.

tt. The eoinliintition with two relatively inornble pnrts, ot' n multiple plnte spring seein-ed to one ol' `artid pnrtis nml extending :nlirirent the other oll seid parts. :1nd relatively mornhle ehtmpinzlz, pieees on the other of snitl pui ls between nhirh the end ol' snitl spring' |-.t--n.|s. seht pieees liein;r so nrrnngetl that ;i relative mowment ol' the parts rlmngingr thengl ol the spring` relsitire lo the rlnmping;l pieees enlist-.s n rlnntping nrtion of the lutter on the springl U, The t-omliinntion with two relativelyv mo'trtlile parts: oi' n multiple phite springA se t-nred to one ol' sztifl porte und extendingr nd ineenl the other of mill parts. freely rotatev lite snhstzrnt'inlly eylirnlrieal weer pieces nmnnted in the other ot' smid parte between nhieh the end of Suid spring extentie. Suid piere's having the sides eontncting with said spring slightly flattened whereby the weer piet-es :tre rotated and said spring is ehnnped more tightly, :n: the parts :1re moved reletirellv to euch other.

ttt. ronplingl deviee romprisingr two con.- i-ling' nientlierst, spring` platee seenred to one of said members und n :onplimglr element en the other of huid membres. .ka-.iid element liein#r prtn ided with :fr slot' in whieh said Spring1 plates. sent. freely rotatable substantially arlindiitfnl n'enr pierre mounted in snid element und projet-,ting into `wid Slot nt either side of Suid lates. said pieces haring the projecting edgee slightly Hnttened.

,ln testimony whereof I alix my signature.

MILTON TIBBEl i@ 

